
MPI –
Troubleshooting
13-60
Item
No.
Inspection
item
Inspection contents
Normal condition
Inspection
procedure
No.
Reference
page
44
Ignition coils
and power
transistors
<EVOLU-
D
Engine: After
having warmed up
D
Timing lamp is set.
(The timing lamp
Engine is idling
3
_
ATDC –
13
_
BTDC
–
–
TION-IV>
(
t
g
p
is set in order to
check actual
ignition timing.)
2,500 r/min
24 – 44
_
BTDC
44
Ignition coils
and power
transistors
D
Engine: After
having warmed up
D
Timing lamp is set
Engine is idling
0 – 13
_
BTDC
–
–
transistors
<EVOLU-
TION-V, VI>
D
Timing lamp is set.
2,500 r/min
24 – 44
_
BTDC
45
ISC
(stepper)
motor
position *
D
Engine coolant
temperature: 80 –
90
_
C
D
Lamps, electric
A/C switch: OFF
2 – 25 steps
–
–
position
D
Lamps,
electric
cooling fan and all
accessories: OFF
D
Transmission:
Neutral (A/T :
P range)
Idl
iti
A/C switch:
OFF
→
ON
Increases by
10 – 70 steps
g )
D
Idle position
switch: ON
D
Engine: Idling
D
When A/C switch
is ON, A/C
compressor should
be operating
D
A/C switch: OFF
D
Select lever:
N range
→
D range
Increases by
5 – 50 steps
49
A/C relay
Engine: After having
warmed up/Engine is
idling
A/C switch: OFF
OFF (Compressor
clutch is not
operating)
Procedure
No. 29
13-39
A/C switch: ON
ON (Compressor
clutch is
operating)
NOTE
*:
In a new vehicle [driven approximately 500 km or less], the stepper motor has sometimes 30 steps
greater than the standard value.
Caution
When shifting the select lever to D range, the brakes should be applied so that the vehicle does
not move forward.